On Wednesday a YouTube user who goes by the name Barraquito uploaded a clip (posted above) showing a new method of accessing a locked iPhone by triggering its voice calling function and then popping out its SIM card with a paper clip. That trick immediately allows access to the phone's contacts and photos. But other functions seem to remain off limits, and the exploit only works on phones with both the vulnerable voicedialing capability enabled and a removable SIM card. Although Barraquito only shows the trick working on an iPhone 4, the Next Web reports that they were able to reproduce it using an iPhone 4S as well, though I couldn't reproduce the problem with my own 4S.

This latest lockscreen vulnerability is in fact the third time the problem has plagued the iPhone, after a more serious version of the bug appeared in October of 2010 and then another last month. On Tuesday iOS version 6.1.3 was released, which fixes the most recent lockscreen issue. The patch doesn't address the latest flaw, however--Barraquito writes that the phone he was testing had 6.1.3 installed.

I've contacted Apple for more information, and will update this post if I hear back from the company.